TLS Online TPP Program

#Question id: 1024


The cell wall of Gram-positive bacteria

#Unit 4. Cell Communication and Cell Signaling
  1. contains a thin layer of peptidoglycan.

  2. contains a thick layer of peptidoglycan.

  3. is, due to its thickness, an excellent barrier to most molecules.

  4. contains an outer membrane containing LPS.

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TLS Online TPP Program

#Question id: 12325

#Unit 10. Ecological Principles

According to bottom-up and top-down control models of community organization, which of the following expressions would  imply  that  an  increase  in  the  size  of  a  carnivore  (C)population  would  negatively  impact  on  its  prey  (P) population, but not vice versa? 

TLS Online TPP Program

#Question id: 11844

#Unit 6. System Physiology – Plant

The following statements are made to describe the biosynthetic pathway of IAA;

a)  IPA pathway involves a deamination reaction to form IPA, followed by a decarboxylation reaction to form indole-3-acetaldehyde (IAld) and then oxidized to IAA by a specific dehydrogenase

b) IAN pathway is similar to the IPA pathway, except that the order of the deamination and decarboxylation reactions is reversed, and different enzymes are involved

c) IAM pathway  involves the two enzymes  tryptophan monooxygenase and IAM hydrolase

d) In the IAN pathway, tryptophan is first converted to indole-3-acetaldoxime and then to indole-3-acetonitrile. The enzyme that converts IAN to IAA is called nitrilase

Which of the following is the correct  statements  of about the biosynthesis of  IAA?

TLS Online TPP Program

#Question id: 3418

#Unit 11. Evolution and Behavior

Which of the best explanation of directional natural selection occur by change in environmental condition?

A. Increase in the frequency of dark-colored mutants in polluted areas, became known as industrial melanism

B. Numerous insect pests become resistant to insecticides and numerous bacteria become resistant to antibiotics.

C. A plant that is too short may not be able to compete with other plants for sunlight. However, extremely tall plants may be more susceptible to wind damage

D- Beetles move into a new environment with patches of light-green moss and dark-green shrubs, both light and dark beetles might be better hidden (and survive better) than medium-green beetles

TLS Online TPP Program

#Question id: 23303

#General Aptitude

When your friend invites you on feast then what do you in these conditions?

TLS Online TPP Program

#Question id: 10498

#Unit 6. System Physiology – Plant

Which one of the following inhibitor that inhibits blue light–stimulated stomatal opening and the inhibition is concentration dependent, while does not block red light–stimulated opening.